Gun-sight



UNITED STATES ra'limac PATENT OFFICE.

HERMAN R. FRENSDORF, OF KIMBERLY, WISCONSIN.

GUN -SIGI-IT.

Application led September 9, 1918.

To all 'whom t may concern Be it known that I, HERMAN R. FmiNs- DORF, a citizen of the United States, and resident of Kimberly, in the county of Outagamie and State of Wisconsin, have invented new and useful Improvements in Gun- Sights, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specilication.

The invention relates to gun sights and more particularly to a rear sight which. is fully described and explained in the specication and shown in the accompanying drawings in which:

Figure 1 is a view of a gun -barrel equipped with the rear sight embodying the invention, parts being broken away Fig. 2 is a plan view of the sight in position on the barrel;

Fig. 3 is a rear view of the sight;

Fig. 4 is a view of the rear sight showing it sighted up with the front sight with which it is designed to be used; and

Fig. 5 is a modified form of rear sight.

The rear sight consists of a base member 6 to which the sighting leaf 7 is secured or formed integral with it and the notched member 8, of usual construction for degat- .x'ng themleaf 7 to different heg-htg'said no c e meinbkewrwbeing slidably mounted in a slot 9 in the base member and a slot 10 in the leaf 7.

Referring to Figs. 1 to 4 of the drawings, it will be noted that the leaf 7 has a V- notch 11, a straight side 12 and a straight side 13. The straight side 12 is at right angles to the top edge 14 of one side of the sight and the straight side 13 is at right angles to the top edDge 15 of the other side of the sight. To more clearly mark off or distinguish the center line which bisects the V-notch a portion of the rear side of the sight is beveled inwardly at 16 to form a center line 17. The height of the edge 14 is such that at point blank range when the rear sight is properly lined up with the front sight it will determine the correct elevation of the sight. Thus the edge 14 determines the elevation of the barrel and the V-notch with center line 17 determines the centering of the barrel upon the object aimed at.

Specification of Letters Patent.

Patented Apr. 26, 1921.

serial No. 253,231.

The sight thus formed is particularly adapted to be used in conjunction with the front sight which consists of two leaves 19 and 20 forming a center line 21 and the leaf 19 being disposed below that of the leaf 20 to form a right angled notch 22, the inner edge 22 of the leaf 20 forming part of this notch and being in line with the center line 21 and the particular front sight here shown is fully described and explained in United States Letters Patent No. 1,275,147 issued to me on August 6, 1918.

In Fig. 4 I have shown the relation of the front and rear sights when alined and in sighting position and it will be noted that the edges 14 and 15 line up with the top edges of the leaves 19 and 20 to give the correct elevation and the line 17 lines up with the line 21 to give the correct horizontal alinement. Furthermore the sights are so proportioned as to leave a small space between the sides 12 and 13 and the adjacent sides of the front sight when the front sight is cprrectly centered with respect to the rear sig t.

The rear sight shown in Fig. 5 is similar to the construction previously described except that the V-notch 11 inclines directly from the top edge in which instance a short edge 13 is formed and not as much of the front sight would be seen as in Fig. 4 though the vertical and horizontal alinement of the rear sight with respect t0 the front sight would be accomplished in the manner previously described.

While I have shown a rear sight with a single leaf, it will be understood that such changes in the precise construction of the herein-disclosed sight may be made as come within the scope of the claims.

What I claim as my invention is:

1. A gun sight having a V-notch and inwardly beveled portions on the rear side of the sight defining a center line meeting the apex of the notch.

2. A rear sight having a V-notch and vertical sides extending upwardly from the ends of said notch, one of said sides having a- I horizontally extending Aiedge determining the"elevation.f"

v '3T' sight having a V-notch with straight sides extending vertically from ends of the notch, one of said sides being longer than the other, and each side having the notch, and a front sight having a center an edge extending horizontally therefrom line and a horizontally extending edge, the 10 and determining elevation. horizontal edges of said sights coperating 4. The combination With a gun barrel, of to determine the elevation alldwthemeenter means for sighting the barrel comprising a lines of gaidightsrycooperating toflslmne rear sight having a V-notch7 a side adjacent Ltljffliateial aiming ofthebffl; said notch having a horizontally extending In testimony Whereof,I aiiiX my signature. 15 edge and a center line meeting the apex of HERMAN R. FRENSDORF. 

